On her way down the road paved with yellow brick, Dorothy
frees the Scarecrow from the pole he is hanging on, restores the
movements of the rusted Tin Woodman (to be determined) with an oil
can, and encourages them and the Cowardly Lion (to be determined) to
journey with her and Toto to the Emerald City. The Scarecrow wants
to get a brain, the Tin Woodman a heart, and the Cowardly Lion,
courage. All are convinced by Dorothy that the Wizard can help them
too. Together, they overcome obstacles on the way including narrow
pieces of the yellow brick road, Kalidahs (to be determined), a
river, and the Deadly Poppies.

When the travelers arrive at the Emerald City, they are asked to
use green spectacles by the Guardian of the Gates (to be
determined). When each traveler meets with the Wizard, he appears
each time as someone or something different. To Dorothy, the Wizard
is a giant head; the Scarecrow sees a beautiful woman; the Tin
Woodman sees a ravenous beast; the Cowardly Lion sees a ball of
fire. The Wizard agrees to help each of them, but one of them must
kill the Wicked Witch of the West (to
be determined) who rules over the Winkie Country.

As the friends travel across the Winkie Country, the Wicked Witch sends
wolves (to be determined), crows (to be determined), bees (to be
determined), and then her Winkie soldiers (to be determined) to
attack them but they manage to get past them all. Then, using the
power of the Golden Cap, the Witch summons the Winged Monkeys (to be determined) to
capture all of the travelers.

When the Wicked Witch gains one of Dorothy's silver shoes by
trickery, Dorothy in anger grabs a bucket of water and throws it on
the Wicked Witch, who begins to melt. The Winkies rejoice at being
freed of the witch's tyranny, and they help to reassemble the
Scarecrow and the Tin Woodman. The Winkies love the Tin Woodman and
they ask him to become their ruler, which he agrees to do after
helping Dorothy return to Kansas.

Dorothy uses the Golden Cap to summon the Winged Monkeys to
carry her and her companions back to the Emerald City, and the King
tells how they were bound by an enchantment to the cap by Gayelette (to be
determined).

When Dorothy and her friends meet the Wizard of Oz again, he
tries to put them off. Toto accidentally tips over a screen in a
corner of the throne room, revealing an old man who had journeyed
to Oz from Omaha long ago in a hot air
balloon.

The Wizard provides the Scarecrow, the Tin Woodman, and the
Cowardly Lion with a head full of bran, pins, and needles ("a lot
of bran-new brains"), a silk heart stuffed with sawdust, and a
potion of "courage", respectively. Because of their faith in the
Wizard's power, these otherwise useless items provide a focus for their desires. In order to help
Dorothy and Toto get home, the Wizard realizes that he will have to
take them home with him in a new balloon, which he and Dorothy
fashion from green silk. Revealing himself to the people of the
Emerald City one last time, the Wizard appoints the Scarecrow, by
virtue of his brains, to rule in his stead. Dorothy chases Toto
after he runs after a kitten in the crowd (to be determined), and
before she can make it back to the balloon, the ropes break,
leaving the Wizard to rise and float away alone.

Dorothy turns to the Winged Monkeys to carry her and Toto home,
but they cannot cross the desert surrounding Oz. The Soldier with the Green
Whiskers (to be determined) advises that Glinda, the Good Witch of the South (to be
determined), may be able to send Dorothy and Toto home. They, the
Scarecrow, the Tin Woodman, and the Cowardly Lion journey to
Glinda's palace in the Quadling Country. Together they escape
the Fighting Trees (to be determined), dodge the Hammer-Heads (to
be determined), and tread carefully through the China Country. The
Cowardly Lion kills a giant spider, who is terrorizing the animals in a
forest, and he agrees to return there to rule them after Dorothy
returns to Kansas—the biggest of the tigers (to be determined)
ruling in his stead as before. Dorothy uses her third wish to fly
over the Hammer-Heads' mountain.

At the Glinda's palace, the
travelers are greeted warmly, and it is revealed by Glinda that
Dorothy had the power to go home all along. The Silver Shoes she
wears can take her anywhere she wishes to go. She tearfully
embraces her friends, all of whom will be returned, through
Glinda's use of the Golden Cap, to their respective sovereignties:
the Scarecrow to the Emerald City, the Tin Woodman to the Winkie
Country, and the Cowardly Lion to the forest. Then she will give
the Cap to the king of the Winged Monkeys, so they will never be
under its spell again. Dorothy and Toto return to Kansas and a
joyful family reunion. The Silver Shoes are lost during Dorothy's
flight and never seen again.